# northamerica_usa_tx012 - Leon River - Breitenmoser Tree Ring Chronology Data #----------------------------------------------------------------------- # World Data Center for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # NOTE: Please cite Publication, and Online_Resource and date accessed when using these data. # If there is no publication information, please cite Investigators, Title, and Online_Resource and date accessed. # # # Online_Resource: # # Original_Source_URL: # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Tree Rings #-------------------- # Contribution_Date # Date: 2016-01-07 #-------------------- # Title # Study_Name: northamerica_usa_tx012 - Leon River - Breitenmoser Tree Ring Chronology Data #-------------------- # Investigators # Investigators: Breitenmoser, P.; Bronnimann, S.; Frank, D. #-------------------- # Description_and_Notes # Description: Data from Breitenmoser 2014 Journal of past Climate supplementary, see publication for ARSTAN standardization details #-------------------- # Publication # Authors: Breitenmoser, P.; Bronnimann, S.; Frank, D. # Published_Date_or_Year: 2014-03-11 # Published_Title: Forward modelling of tree-ring width and comparison with a global network of tree-ring chronologies # Journal_Name: Climate of the Past # Volume: 10 # Edition: # Issue: # Pages: 437-449 # DOI: 10.5194/cp-10-437-2014 # Online_Resource: www.clim-past.net/10/437/2014/ # Full_Citation: # Abstract: We investigate relationships between climate and tree-ring data on a global scale using the process-based Vaganov–Shashkin Lite (VSL) forward model of tree-ring width formation. The VSL model requires as inputs only latitude, monthly mean temperature, and monthly accumulated precipitation. Hence, this simple, process-based model enables ring-width simulation at any location where monthly climate records exist. In this study, we analyse the growth response of simulated tree rings to monthly climate conditions obtained from the CRU TS3.1 data set back to 1901. Our key aims are (a) to assess the VSL model performance by examining the relations between simulated and observed growth at 2287 globally distributed sites, (b) indentify optimal growth parameters found during the model calibration, and (c) to evaluate the potential of the VSL model as an observation operator for data-assimilation-based reconstructions of climate from tree-ring width. The assessment of the growth-onset threshold temperature of approximately 4–6 C for most sites and species using a Bayesian estimation approach complements other studies on the lower temperature limits where plant growth may be sustained. Our results suggest that the VSL model skilfully simulates site level treering series in response to climate forcing for a wide range of environmental conditions and species. Spatial aggregation of the tree-ring chronologies to reduce non-climatic noise at the site level yielded notable improvements in the coherence between modelled and actual growth. The resulting distinct and coherent patterns of significant relationships between the aggregated and simulated series further demonstrate the VSL model’s ability to skilfully capture the climatic signal contained in tree-ring series. Finally, we propose that the VSL model can be used as an observation operator in data assimilation approaches to reconstruct past climate. #-------------------- # Funding_Agency # Funding_Agency_Name: Swiss National Science Foundation # Grant: #-------------------- # Site_Information # Site_Name: Leon River # Location: # Country: United States # Northernmost_Latitude: 32.18 # Southernmost_Latitude: 32.18 # Easternmost_Longitude: -98.5 # Westernmost_Longitude: -98.5 # Elevation: 380 m #-------------------- # Data_Collection # Collection_Name: northamerica_usa_tx012B # Earliest_Year: 1758 # Most_Recent_Year: 1982 # Time_Unit: y_ad # Core_Length: # Notes: {"sensitivity":"moisture"}{"T1":"4.22706298241"}{"T2":"16.7060220681"}{"M1":"0.0224988499653"}{"M2":"0.515660899954"} #-------------------- # Species # Species_Name: post oak # Species_Code: QUST #-------------------- # Chronology: # # # #-------------------- # Variables # # Data variables follow that are preceded by ## in columns one and two. # Data line variables format: Variables list, one per line, shortname-tab-longname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data) # ##age age, , ,years AD, , , , ,N ##trsgi tree ring standardized growth index, tree ring, ,percent relative to mean growth, , Tree Rings, , ,N # #-------------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Values: nan # age trsgi 1758 2.021 1759 1.561 1760 1.468 1761 1.125 1762 1.193 1763 0.926 1764 0.858 1765 1.073 1766 0.718 1767 0.474 1768 0.422 1769 0.668 1770 1.059 1771 1.012 1772 0.303 1773 0.811 1774 0.903 1775 0.582 1776 0.57 1777 0.515 1778 0.705 1779 1.12 1780 0.796 1781 1.66 1782 1.584 1783 1.227 1784 0.967 1785 0.88 1786 0.615 1787 0.718 1788 0.923 1789 0.407 1790 0.553 1791 1.068 1792 0.684 1793 1.897 1794 1.223 1795 1.309 1796 1.595 1797 1.087 1798 0.985 1799 1.29 1800 0.805 1801 0.49 1802 0.924 1803 0.844 1804 0.892 1805 0.515 1806 0.479 1807 0.894 1808 0.613 1809 1.017 1810 1.483 1811 1.278 1812 0.893 1813 1.119 1814 1.305 1815 1.442 1816 0.898 1817 0.983 1818 0.648 1819 0.977 1820 0.67 1821 0.883 1822 0.747 1823 0.972 1824 0.974 1825 1.249 1826 1.163 1827 0.925 1828 1.067 1829 1.184 1830 0.984 1831 0.773 1832 0.576 1833 1.472 1834 1.288 1835 0.841 1836 1.341 1837 1.079 1838 1.28 1839 0.797 1840 1.127 1841 0.737 1842 0.599 1843 1.302 1844 1.439 1845 1.101 1846 1.149 1847 1.146 1848 1.135 1849 0.911 1850 1.461 1851 1.278 1852 0.726 1853 1.155 1854 1.175 1855 0.528 1856 0.755 1857 0.506 1858 1.138 1859 0.468 1860 0.569 1861 0.583 1862 0.655 1863 0.637 1864 0.773 1865 0.694 1866 0.983 1867 1.4 1868 0.836 1869 1.251 1870 1.405 1871 1.245 1872 1.323 1873 1.39 1874 0.731 1875 0.888 1876 1.159 1877 1.253 1878 0.885 1879 0.735 1880 0.795 1881 0.798 1882 0.903 1883 1.039 1884 1.573 1885 1.456 1886 0.721 1887 0.954 1888 1.743 1889 1.325 1890 1.919 1891 1.13 1892 1.098 1893 0.617 1894 0.952 1895 1.275 1896 0.971 1897 1.726 1898 1.22 1899 1.101 1900 0.98 1901 0.903 1902 0.673 1903 1.217 1904 0.798 1905 1.211 1906 0.942 1907 0.547 1908 1.081 1909 0.537 1910 0.758 1911 0.826 1912 0.975 1913 0.665 1914 1.018 1915 1.139 1916 0.895 1917 0.717 1918 0.501 1919 1.202 1920 1.36 1921 0.911 1922 1.084 1923 1.108 1924 1.136 1925 0.577 1926 1.334 1927 0.758 1928 0.921 1929 1.005 1930 0.674 1931 0.967 1932 1.219 1933 0.89 1934 0.805 1935 1.121 1936 0.822 1937 1.066 1938 0.873 1939 0.912 1940 0.757 1941 1.268 1942 1.476 1943 1.129 1944 1.111 1945 1.089 1946 1.099 1947 1.021 1948 0.86 1949 1.133 1950 1.114 1951 0.763 1952 0.59 1953 0.601 1954 0.629 1955 0.851 1956 0.684 1957 0.906 1958 0.926 1959 0.693 1960 1.195 1961 0.905 1962 0.757 1963 0.899 1964 0.824 1965 1.314 1966 0.78 1967 0.638 1968 1.649 1969 1.114 1970 1.44 1971 0.71 1972 0.986 1973 1.203 1974 0.772 1975 1.133 1976 0.836 1977 1.228 1978 0.57 1979 1.105 1980 0.877 1981 0.718 1982 1.137